Physics – Condensed Matter – Materials Science
Scientific paper
1999-10-26
J. Phys. Soc. Jpn, vol. 69, No.12, pp3773-3776 (2000)
Physics
Condensed Matter
Materials Science
4 pages, 2 figures. (reposted at Aug. 2000 with major changes)
Scientific paper
10.1143/JPSJ.69.3773
From the order-N electronic-structure formulation, a Hamiltonian is derived, of which lowest eigen state is the generalized or composite-band Wannier state. This Hamiltonian maps the locality of the Wannier state to that of a virtual impurity state and to a perturbation from a bonding orbital. These theories are demonstrated in the diamond-structure solids, where the Wannier states are constructed by a practical order-N algorithm with the Hamiltonian. The results give a prototypical picture of the Wannier states in covalent-bonded systems.
Fujiwara Takeo
Hoshi Takeo
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